No silly, not that kind. I mean use your race runes! Adding a race rune to a spell will have the same effect as having twice the 'Fec' runes in it when cast on the proper race.
Ok...don't understand my ogre mutterings? Here is an example.
Say a heal with 4 fecs in it will heal for 400 hp. By adding a 'Lin' Rune to this same heal, it will now heal Goblinoids for 800hp, and other races for 400hp.
Race runes will affect any spell that a 'Fec' rune will.